This is a crime. Also, it's a crime that is possibly motivated by religious hatred. We don't know yet.
Regardless, we can expect that he will be indicted by a Christian prosecutor, found guilty by a Christian jury, and sentenced by a Christian judge. In the U.S. and the rest of the infidel West, a Christian murdering members of a Muslim minority will be dealt with swiftly by the law. In the Islamic world, a Muslim can rape or murder a member of a Christian minority with impunity and the law will not act specifically because the life of a Christian is not worth the same as that of a Muslim.